Heating apparatus.



Y No.- 739,503,

1 BATBNTED SEPT. '22, .1903, J;N'. ]!t[URI-HY.v l .'*HEATING APPARATUS. A'rrnmnron nun 'nu e, 1902.

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NVENTDB- I .Jaim N Mu H'PHY.

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HEATING APPARATUS.

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No. 739,503. l PATEN'HID SEPT. 22, 1903.

J. N. MURPHY.

HEATING APPARATUS.

APPLIoATIoN FILED un s, 1902.

No MODEL. k @SHEETS-SHEET 5.

WTNESSEE. NVENTDR.

"Z BHNNMuRPfv-/y UNITED j STATES Patented September 22, 1903. p

PATENT OFFICE.

JOHN N. MURPHY, OF SPRINGFIELD, ILLINOIS.

HEATING APPARATUS.

SPECIFICATION forming part of Letters Patent No. 739,503, dated September 22, 1903.

mime... naa May 6,1902. serai 110.106.158. or@ man.)

T all whom it may con/cern.-

Beit known that I, JOHN N. MURPHY, acitzen of the United States, residing at Springfield, in the county of Sangamon and State of Illinois, have invented certain new and useful Improvements in Heating Apparatus, of which the following is such a full, clear, and exact description as will enable others skilled 4in the art to which it appertains to make and lo use my said invention.

My invention relates to heating apparatus of that class in which hot Ywater or -steam is used as the heating medium. The general purpose of my invention isto provide a heating apparatus. so constructed and arranged that the draft-currents within the apparatus will diverge from the center of the fire-box toward the ends of the apparatus and will then converge from the ends toward zo the center and unite in a common central tlue or exit. Keeping this general purpose in view, the more speciic purposes of my invention are to provide a heating apparatus consisting of a series of sections so con- 2 5 structed and arranged that the iiring may be 3o said section being so constructed andarranged that when a number of such sections are assembled in a heating apparatussaid conduits will lie within and extend across the fire-box of the apparatus in such manner that substantially the entire `outer surface of the wallsof said conduits will-be exposed to the direct action of the fire; to provide a heating apparatus having a series of sections provided with conduits, said sections being so disposed 4o relative to each other as to leave spaces between the conduits through which iiames and the products of combustion pass into that part of the iire-boX' above the conduitsgto provide a heatingapparatus consistingfof a central section or sections, intermediate sections, and

end sections so constructed and arranged that when said sections are assembled the draft of the apparatus will be from the lower chamber of the fire-box upward between the 5o conduits into the upper chamber of the rebox, thence outwardly and divergently from view of one of the end sections.

into longitudinal tlues or ways opening into a common central flue, and thence th rough said central iiue to the exit, said sections being so constructed and arranged as to equalize the draft through the'ways in-the end sections; -v

to provide a central section, an intermediate section, and an end section, allof new and useful form and adapted to be assembled in a unitary structure having a central draft, substantially as hereinafter explained to provide means for facilitating the circulation of water through the central sections and the intermediate sections of the apparatus; to provide aseotion for heating apparatus of a form adapted to facilitate the insertion or removal of the grate bars of the apparatus, and to provide a grate-supporting device of novel andv improved construction.

With these ends in view my invention con sists of the novelfeatures of construction and combinations of `parts shown in the annexedv drawings, to which reference is-hereby made and hereinafter.particularly described, and finally recited in the claims.-

Referringto the drawings, Figure l isa perspective view of the *complete apparatus. Fig. 2 is a vertical longitudinal section `on the line 2 2 of Fig. l. Fig. 3 is ahorizontal longitudinal section on the line 3 3 of Fig. 2. Fig. 4 is a vertical transverse section on the line 4 4 of Fig. 2.' Fig. 5 isfa perspective view of one of the central sections detached. Fig. 6 is a perspective view of a pair of central sections in operative position relative to each other and shows the central nues formed by the union of the sections. Fig. 7 is a perspective View ofthe filling-block usable with the central sections. Fig. 8 is a perspective Fig. 9 .is a horizontal transverse section on the line 9 9 of Fig. 8. Fig." lOis a perspective view of one of the intermediate sections. Y Fig. ll is a vertical longitudinal section on the line 1l ll of Fig. l0. Fig. l2 is a vertical longitudinal section through the heater-section on the line 12 l2 of Fig. ll. Figs. 13 and 1'4 are horizontal transverse sections on the lines 13 13 `and 14 14, respectively, of Fig. l0. Fig. 15 is an enlarged perspective view of a part of one of the side walls of the, ash-pit and shows two of the grate-blocks in position on the ledge of the side wall. Fig. 1G is a front elevation of an alternative form of the central section. Similar reference characters designate like parts in the several views of the drawings.

The essential elements of the apparatus are a central section or sections, end sections, and

intermediate sectionsinterposed between the y end sections and the central section or sections, and means for uniting all of said sections to form an operative apparatus.

There are three classes of sections, and all of the sections in any one class are exactly alike except as hereinafter set forth. A detail description of one section in each class will therefore suffice to clearly explain the essential structural features of all of the sections.

The central section A in its preferable form consists of a box-shaped casting having hollow legs d, a hollow conduit a', intercommunicating with the interior of the legs, an integral lateral hollow tongue a2 approximately central to the body of the section, and a hollow upper part a3, pierced by holes d4, adapted to receive suitable nipples a, used to connect the sections with each other, so as to permit free circulation of water or steam through the sections. Between the conduit a and the tongue aV2 is an opening a, forming a passage-way between the conduit and the tongue, the use of which will be hereinafter explained. Flues a7 extend transversely through the section. The front faces of the parts a', c2, and CL3 are all flush, so that the sections will fit closely together, as shown in Fig. 6. The width of the conduit a is less than the width of the legs a. When two or more sections are joined, as shown in Fig. (5, there will be openings as between the adjacent conduits intercommunicating with the lower part and the upper part of the fire-box, as hereinafter more fully explained. I have shown in the drawings a central section of such shape that when a pair of sections are placed in juxtaposition, as shown, the walls of the part-s a2 and c3 will form a central iiueA, one-half of the flue being in each section. The front edges of the tongues will abut against each other. The lower surfaces of the tongues of all the sections combined in the apparatus will form the crown of the Vfire-box. The space between the parts d2 and the upper ends of the parts ct will form openings or ways A2, one-half of each opening being in each section, and the spaces between the conduits will form ways as, through which the fire comes in direct contact with the under surface of the tongues and also in direct contact with practically the whole of the external surfaces of the conduits.

By employing sections substantially of the form described I produce a {ire-box having an upper and a lower chamber with free commu nication between them, said fire-box being traversed by conduits havingl arge heatingsurfaces in direct contact with the fire.

The section A preferably has one water-leg of about the same length as the water-legs of sections commonly used in similar apparatus, the other leg being shorter, so as to permit the use of a filling-block C and leave a door-opening between the iilling-block and the short legs of the other two central sections.

The filling-block C is a hollow casting of a length equal to the width of the two central sections and has openings C, through which water-circulation is maintained between the sections D, contiguous to the block. Where central sections are used which have waterlegs of unequal length, the block serves to fill the space under the fuel-door, which is mounted on the central sections.

It is obvious that instead of using a pair of sections in conjunction, forming a central flue and door-openings, I may without departing from my invention use a single central section having a central fine and door-openingssuch, for example, as is shown in front elevation in Fig. lG-and combinable with end sections and intermediate sections, substantially as herein set forth.

The front end of the central flue A' and the front opening of the way A2 are closed by a door A3, mounted on the section or sections A.

On the back of the section are lugs a?, (see Fig. 4,) which support a smoke-box A5, which is secured on the section by screws (L10 or equivalent securing devices, and the iiue A' and the way A2 communicate with the smokeloox. .An oscillative damper AG is mounted on the smoke-box and extends across the rear e'nd of the way A2. Vhen the damper is down, as shown in Figs. 2 and l, the draftcurrents will diverge from the center through the upper chamber of the fire-box, through the openings h' into the longitudinal ilues, thence to the central :flue A, and thence through the smoke-box to the chimney. If the damper is raised there will bedirect draft from the fire-box to the smoke-box and thence to the chimney.

In the back of the smoke-box is a checkdraft door A7, having a heavy handle a, which gravitates to close the door. By raising the handle the door may be opened. to check the draft through the smoke-box to any desired extent.

The end section consists of a hollow casting B. (Clearly shown in its preferable form in Figs. 2, 8, and 9.) The section is pierced by nipple-openings h, registering with the corresponding openings in the other sections. Openings h' and b2 extend transversely through the section. When the sections are assembled, the opening h is in line andV communicates with the upper chamber of the fire-box and also with the longitudinal ilues, which communicate with the central iiueA'. The opening b2 communicates with the lower part of the fire-box. Lugs h3 serveto support the door-frame B on the section. Lugs h4 receive bol ts or other securin g devices for securing the door-frame on the section. Tater-space if extends entirely around the openings b and b2. The intermediate section D is a hollow IOO IIO

. casting, preferably of the form shown in Figs.`

l0 to 14C, inclusive, and has nipple-openin gs (l, transverse flucs cl, water-legs cl2, conduits d3, and openings d4, which register with and have the-same functions as the corresponding parts and openings of the sections A and B.

When sections A, B, and D are assembled in a heating apparatus, the lues'cl, in. conjunc-y tion with the flues a7, form a series of. parallel longitudinal iues extending inward from the ends of the apparatus and terminating in the central flue A.v I'preferably employa series of Vflues such as I have just described; but I may, without departing from my invention, dispense with the divisional spaces between the ilues and use a single transverse flue vof suitable dimensions through each section and unite the sections so as to form two longitudinal iiues, one on each side of the center, leading from theends of the apparatusinto the central flue A.Y

The inside edges of the legs of the sections A and D are chamferednear the ends of the legs, so that when two sections are in juxtaposition the adjacent chamfered parts will Aform ways w, (see Figs. 2 and 6,) through which the ends of the grate-bars may pass,

,so that the grate-bars may be inserted or removed without dismounting the sections.

The sections A, B, and D are assembled and mounted on a rectangular frame E, having a ledge e, on which the lower ends of the sectionsV rest, and having ribs le' for strengthening the frame. IVhen assembled as described,

all of the sections are secured together by bolts G or equivalent securing devices. On

the inner side walls of the frame are inwardly-- projecting ledges E', on which the grateblocks F are slidable'.

The frame E has at thecenter of its front.

and at each end door-openings e3, supplied with suitable doors E2, mounted on the frame -A. A draft-controlling door E3 is on the central door E2.

At each end of the frame is an opening c4,

suitable for the insertion of the grate-blocks and provided with a suitable closure e5.

The preferable form of the `grate-blocks and the means for supporting them on the frame are clearly shown in Fig. 15.

I have shown in the'drawings an apparatus embracing two central sections joined to form a central flue, two end sections, and eight intermediate sections, having openings regis-v mounted` each; end' toward theA center, and thencethrough a central iiue to the exit, thereby greatly improving the directness and quality of the draft; also having the practical advantage that Ythe apparatus is adapted for duced by adding or taking offv sections, as oc casion may require, without impairing the effectiveness of the apparatus.

I-Iaving fully described my inventiomwhat I claim as new, and desire to secure by Letters Patent,I isi 'p i l.A A section for heating apparatus comprising a tongue extending from the front to the rear of the section,the side walls of said ytongue being iush with the sidewalls of the section, iiues transverse to said section, water-space above and around said flues, water-legs, a conduit connecting said water-legs, the width of saidconduit being less than the widtliof the section, and a way between said tongue and said conduit, as set forth. 2.V -A section `for heatingapparatus having a tonguek and transverse iiues so constructed and arranged that a pair of said sections in conjunction will form a central lateral flue vlying above and extending the full length of the tongue and into which the transverse iiues of said sections open, as set f orth.

loq

3. A section for heating apparatus, having transverse flues, a tongue, a conduit and` a way between saidv tongue and saidconduit and combinable with a similar section to form a central iiue into which the transverse iiue's.

of said sections open and a central opening with which the ways in said sections communicate,\as set forth.

4t.v In a heating apparatus, the combination u of a seriesof sections having water-legs, conduits connecting said water-legs, transverse ways above said conduits and transverselues above said'` ways; said Vsections being conjoined to form a` structurehaving a central flue extending from front to rear ofthe structure, flues vextending lengthwise of the struc-,

ture and communicating with said central flue, a central opening underlying said central flue, ways above said conduits communieating with said central opening andnways between said conduits communicating with said central opening, as set forth.

5. In a heating apparatus, the combination p -ofcentral sections having transverse ues,

tongues,ways and conduits, intermediate sections having transverse iiues waysland conduits, the iiu'es and ways in said.k central sections and intermediate sections being respectively in registry with each other, and end sections having openings communicating with the iiues and the-ways in said intermediate sections; all conjoined to form anapparatus having longitudinal flues opening into a common central flue, a central opening under said central flue and openings between said conduits communicating with said central opening, as set forth.

b'. A heating apparatus havin g a two-chainber fire-box, conduits transverse to said iirebox, openings between said conduits, a een tral iue and longitudinal flues communicating1 with said central flue and also co1n1nuni eating with both the upper and the lower compartment of said fire-box, as set forth.

7. Aheating apparatus having atwo-chaniber ire-box, conduits transverse to the firebox,openings between said eonduits,a central flue, longitudinal fines intercominunicating with both compartments of the fire-box and with the central flue, a sinokebox intercommunieating with the central flue and the iirebox and a dam per controlling coinn'iunication between the iirebox and the smoke-box, as set forth.

S. In a heating apparatus the coinbin ation of central sections, intermediate sections and end sections substantially of the form dcscribed; lfuel-doors and cleanin g-doors mounted on said end sections and a fuel-door and cleaning-doors mounted on said central sec tions, as set forth.

In witness whereof I have hereunto subscribed my naine and aiiixed my seal at Sprin giield, Illinois, this 2d day oi April, 1902.

JOHN N. MURPHY. [n s] Witnesses:

N. DU Bois, MAY F. RYAN. 

